The Bee Genus Mydrosoma In Costa Rica (Hymenoptera : Colletidae)

1 Pages·2003·0.33 MB·English

by  C D Michener

54 ENTOMOLOGICALNEWS
SCIENTIFIC NOTE
THE BEE GENUS MYDROSOMA IN COSTA RICA
(HYMENOPTERA: COLLETIDAE)1
CharlesD.Michener
The dissoglottine genus Mydrosoma, consisting ofrarely collected, moderate
sized to large (10 to 17 mm body length) bees, is known from Mexico to
Argentina, but in Central America it has been reported only from Panama
(M. brooksi Michener, 1986). It is therefore ofinterestto report a male specimen
ofM. brooksi in the collection ofInBio (Institute Nacional de Biodiversidad) in
Heredia, Costa Rica, borrowed for study by R. W. Brooks.
The data are as follows: Guanacaste Province: Estacion Pitilla,9 km south of
Santa Cecilia, 700 m elevation, March 1990 (P. Rios, C. Moraga & R. Blanco),
no. 177060.
The specimen differs from Panamanian specimens of M. brooksi in that the
midbasal projection of sternum 5 is an acute tubercle, not a short transverse
lamella suggesting atubercle. My firstreaction was to think it represented a new
species, but since its other characters including those of the hidden sterna and
genitalia are as in M. brooksi, I think it is that species.
The structure of sternum 5 ofthe Costa Rican specimen requires a change in
couplet 7 ofthe key to species (Michener, 1986, p. 199); the second alternative
should read "S V with short, transverse, median basal lamella oracute tubercle;
first flagellomere ..." (italics added).
LITERATURE CITED
Michener, C.D. 1986. A review of the tribes Diphaglossini and Dissoglottini (Hymenoptera,
Colletidae).UniversityofKansas ScienceBulletin 53:183-214.
1ReceivedandacceptedAugust 19,2002.
:Entomology Division,Natural History Museumand Entomology Program,DepartmentofEcology
and Evolutionary Biology, University of Kansas, Lawrence, Kansas 66045, U.S.A. E-mail:
[email protected].
MailedonApril 9,2004